Electric vacuum sweeper nozzle attachment



Jan. ,4, 1938. I c, E HA 2,104,125

ELECTRIC VACUUM SWEEPER NOZZLE ATTACHMENT Filed March 23, 1936 nvwaivndzz.v CLIFFORD E. HAIN.

ATTORNEY.

Patented Jan. 4, 1938 UNITED sTArss- ELECTRIC VACUUM SWEEPER, NOZZLE ATTACHMENT Clifford E. nan, Omaha, Nebr. Application March 23, 1936, Serial No. 701439 3 Claims. (Cl. 15-13) My invention has to do particularly with the art of electric vacuum sweeper nozzle attach. ments and with vacuum sweeper attachments generally.

It is an important object of my invention to provide a vacuum sweeper nozzle attachment that will brush and beat a rug or the like simultaneously.

Another object of my invention is to provide a device of this character wherein the brushes will work the nap of a rug or the like with a whisk broom efiect.

Another object of my invention is to provide a device of this character wherein beaters are provided on each side of the brush in parallel relation thereto. Another object of my, invention is to provide a device of this character wherein the heaters extend substantially the entire length of the nozzle intake opening.

Another object of my invention is to provide a device of this character wherein the wear on a rug or the like due to the beating and brushing thereof is reduced to a minimum.

A further object is to provide a device of this character wherein a rapid,.vibratory beating action is imparted to the beater bars and brushes which move with a rocking or oscillating action.

A still further object is to provide a device of this character wherein the operation thereof is smooth and efficient. 7

Other objects of my invention will appear in the following detailed description taken in connection with the accompanying drawing wherein:

of Figure 1.

Figure 5 isa diagrammatic view of the device to show the oscillating or rocking action of the beater bars.

Referring more particularly to the drawing,

which illustrates a preferred embodiment of the invention, reference numeral it indicates generally the nozzle of a. vacuum sweeper within which is secured a frame comprising end plates -ll secured together in spaced relation by a longitudinally extending rod i2. The plates 1 l fit against the inner-surface of the side walls l3 of the nozzle ill and the attachment is swivelly secured in the nozzle by screws l4 through the plates II and threadably received in the end or side walls 13 of the nozzle. On'the inner side of each end plate H is a bearing support i6 secured to the 5 respective plates II by rivets ll. Each bearing support is provided with a notch I8 closed at the rear side of the attachment and in said notches are received elongated lugs IQ of bearing races 20. Within the bearings are opera- 10 -tively received the respective ends of a longituv dinally extending rotatable shaft 2!, said ends. being in operative association with balls 22 in the bearing race.

At the longitudinal center of the shaft 2| is a pulley 23 secured thereto by a set screw 24. The pulley is connected with the sweeper motor, not shown, by a belt 25 of the usual slightly elastic type, said belt tending to pull the attachment upwardly and inwardly of the nozzle opening, but same is limited in its pull by flanges l5. Adjacent each end of the shaft 2| is an eccentric 2B secured thereon by set screws 21, said eccentrics being adapted to operate in unison with each other.

A stud 28 is riveted to each plate H and support i6, said studs extending longitudinally inwardly from the inner sides of the respective plates l6 and below the shaft 2i. Each stud 28 is provided witha shoulder from which projects a longitudinal extension, threaded adjacent its free end. On each stud extension is oscillatingly received an oscillating or rocking member 29 se cured thereon by nuts 30 threadably received on the threaded ends of the respective stud extensions. Each oscillating member 29 is provided with a notch 3| at its upper end operatively receiving the respective eccentrics 26.

Each oscillating member 29-is also notched at the bottom to receive the beater which comprises two parallel, laterally. spaced, longitudinally extending beater bars 32 connected together adjacent their respective ends by integral, substantially U-shaped portions 33 shaped to be received in the lower notches of the respective members 29, said portions 33 being secured in the lower notches of members 29 by screws 34; 4

Below the shaft 2| and on each side of the pulley 23 is a longitudinally extending brush support 35 in which the upper ends of the brush bristles 36 are secured, said bristles extending downwardly between the beater bars 32 with the lower ends of said bristles on substantially the of said beater bars, said brushes being substantially parallel with the'beater bars.

The brush support 35 is spaced below the shaft 2| and is offset at 31 to permit free movement of the pulley 23. At each end of the support 35 same is turned downwardly at 38 and outwardly at 39 and secured to the respective oscillating members by screws 40.

It should be noted that the beater bars operate substantially. within the intake opening and extending substantially the entire length thereof.

Upon rotation of shaft 2! the eccentrics 26 rotate within the notches 3| causing the oscillating members 29 to oscillate or rock on the extensions of the studs 38 as shown by the arrows 4| in Fig. 5. The rocking of the oscillating members 29 causes the beater bars 32 to also rock or oscillate in an effective beating action as shown by arrows 42 in Figure 5. As the brushes are secured in fixed relation to the beater bars and oscillate therewith brushing and heating is provided by my invention. A rapid succession of blows by the beater bars and short sweeps by the brushes occur which are less destructive to the fibers of a rug or the like than the frictional agitation of rotary agitators and brushes.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it .will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spiritand scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred .embodiment thereof.

Having thus described my invention what I claim is:

1. A vacuum sweeper attachment adapted to be secured in the nozzle of a vacuum sweeper having an intake opening therein, a frame, said frame including end plates, means for removably attaching a bearing to each end plate, a shaft rotatably mounted in said bearings, an eccentric on each end of the shaft adjacent the respective bearings, an oscillatable member adjabeing operatively mounted on their respective end plates, a pair of laterally spaced, longitudinally extending substantially parallel beater bars I attached adjacent their ends to the respective oscillatable members, and brush means secured in fixed relation relative to the beater bars, said brush means being received longitudinally between said bars.

2. A vacuum sweeper attachment adapted to be secured in the nozzle of a vaccum sweeper having an intake opening therein, a frame, said frame including end plates, means for removably attaching a bearing to each end plate, a shaft rotatably mounted in said bearings, a pulley on said shaft adjacent the longitudinal center thereof, an eccentric on each end of the shaft adjacent the respective bearings, an oscillatable member adjacent each end plate, said members having notches in which are operatively received the respective eccentrics, said oscillatable members being operatively mounted on their respective end plates, a pair of laterally spaced, longitudinally extending substantially parallel beater bars attached adjacent their ends to the respective oscillatable members, and brush means secured in fixed relation relative to the beater bars, the brush means extending longitudinally between said bars, said means having an offset" portion adapted to receive said pulley to permit free movement. thereof.

3. A vacuum sweeper attachment adapted to be secured in the nozzle of a vacuum sweeper, a frame including end plates, a shaft rotatably associated with said end plates, an eccentric on each end of the shaft adjacent the end plates, an oscillatable member rockingly mounted on each end plate and having notches within which the respective eccentrics are operably received, a pair of substantially parallel beater bars attached to said oscillatable members, said bars being laterally spaced apart, and brush means secured in parallel and fixed relation to 'said beater bars.

- CLIFFORD E. HAIN. 

